It is now time to attempt a summing-up. We have started from the aberrations of the sexual impulse in reference to its object and aim and have encountered the question whether these originate from a congenital predisposition, or whether they are acquired in consequence of influences from life. The answer to this question was reached through an examination of the relations of the sexual life of psychoneurotics, a numerous group not very remote from the normal. This examination has been made through psychoanalytic investigations. We have thus found that a tendency to all perversions might be demonstrated in these persons in the form of unconscious forces revealing themselves as symptom creators and we could say that the neurosis is, as it were, the negative of the perversion. In view of the now recognized great diffusion of tendencies to perversion the idea forced itself upon us that the disposition to perversions is the primitive and universal disposition of the human sexual impulse, from which the normal sexual behavior develops in consequence of organic changes and psychic inhibitions in the course of maturity. We hoped to be able to demonstrate the original disposition in the infantile life; among the forces restraining the direction of the sexual impulse we have mentioned shame, loathing and sympathy, and the social constructions of morality and authority. We have thus been forced to perceive in every fixed aberration from the normal sexual life a fragment of inhibited development and infantilism. The significance of the variations of the original dispositions had to be put into the foreground, but between them and the influences of life we had to assume a relation of coöperation and not of opposition. On the other hand, as the original disposition must have been a complex one, the sexual impulse itself appeared to us as something composed of many factors, which in the perversions becomes separated, as it were, into its components. The perversions, thus prove themselves to be on the one hand inhibitions, and on the other dissociations from the normal development. Both conceptions became united in the assumption that the sexual impulse of the adult due to the composition of the diverse feelings of the infantile life became formed into one unit, one striving, with one single aim.